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Airworthiness Directive 04-4921

recurring
AD 04-4921 · 2004-03-09 · airframe

Airworthiness Directives; Airbus Model A300 B2 and A300 B4 Series Airplanes; A300 B4-600, B4-600R, C4-605R Variant F, and F4-600R (Collectively Called A300-600); and A310 Series Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to all Airbus Model A300 B2 and A300 B4 series airplanes; A300 B4-600, B4-600R, C4-605R Variant F, and F4-600R (collectively called A300-600); and A310 series airplanes. This AD requires, for certain airplanes, identifying the part number of the landing gear selector valves. For all airplanes, this AD requires repetitive maintenance tasks or operational tests of the landing gear selector valves, and replacing discrepant valves with certain new valves. This action is necessary to prevent failure of the landing gear selector valves, which could result in residual pressure on the retraction chamber side of the electro-hydraulic selector, and consequent uncommanded retraction of the landing gear when the airplane is on the ground. This action is intended to address the identified unsafe condition.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 04-4921 applies to

MakesAirbus
ModelsA310, B4-600R

certain

Whether AD 04-4921 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.
Date — When the work was done.
Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.
Signature & certificate — The A&P/IA who returned it to service, with certificate number.
Is AD 04-4921 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.